{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\toprule
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                    &\multicolumn{1}{c}{Job Orders}&\multicolumn{1}{c}{Migrants}&\multicolumn{1}{c}{Domestic Share}&\multicolumn{1}{c}{Pre-Complaints}\\
\midrule
Conventional        &       0.861*  &       3.788   &      -0.018   &       0.113   \\
                    &     (0.464)   &     (8.669)   &     (0.108)   &     (0.228)   \\
\addlinespace
Bias-corrected      &       1.006** &       6.093   &      -0.009   &       0.164   \\
                    &     (0.464)   &     (8.669)   &     (0.108)   &     (0.228)   \\
\addlinespace
Robust              &       1.006*  &       6.093   &      -0.009   &       0.164   \\
                    &     (0.528)   &     (9.892)   &     (0.129)   &     (0.293)   \\
\midrule
N                   &       20714   &       28060   &       28058   &       28060   \\
Depvar. Mean        &        1.50   &       25.43   &        0.25   &        0.56   \\
\bottomrule
\end{tabular}
}
